#include "PthreadPool.h"

template <typename T>
threadpool<T>::threadpool(int thread_number, int max_requests)
    : m_thread_number(thread_number),
      m_max_requests(max_requests),
      m_stop(false),
      m_threads(NULL) {
    printf("初始化线程池！\n");
    if (thread_number <= 0 || max_requests <= 0)
        throw std::exception();
    m_threads = new pthread_t[m_thread_number];
    if (!m_threads)
        throw std::exception();
    for (int i = 0; i < thread_number; ++i) {
        if (pthread_create(m_threads + i, NULL, worker, this) != 0) {
            delete[] m_threads;
            throw std::exception();
        }
        if (pthread_detach(m_threads[i])) {
            delete[] m_threads;
            throw std::exception();
        }
    }
}
template <typename T>
threadpool<T>::~threadpool() {
    printf("线程池析构！\n");
    delete[] m_threads;
}
template <typename T>
bool threadpool<T>::append(T* request) {
    printf("append()\n");
    m_queuelocker.lock();
    if (m_workqueue.size() > m_max_requests) {
        m_queuelocker.unlock();
        return false;
    }
    m_workqueue.push_back(request);
    m_queuelocker.unlock();
    m_queuestat.post();
    return true;
}
template <typename T>
void* threadpool<T>::worker(void* arg) {
    printf("work()!\n");
    threadpool* pool = (threadpool*)arg;
    pool->run();

    return pool;
}
template <typename T>
void threadpool<T>::run() {
    printf("run()!\n");
    while (!m_stop) {
        m_queuestat.wait();
        m_queuelocker.lock();
        if (m_workqueue.empty()) {
            m_queuelocker.unlock();
            continue;
        }
        T* request = m_workqueue.front();
        m_workqueue.pop_front();
        m_queuelocker.unlock();
        if (!request) {
            continue;
        }
        printf("process()\n");
        request->process();
    }
}